Advertising and like device



Jan. 10, 1928 C. H. JARRETT Jan. 21. 1926 3 Sheets-Sheet l Jan. 10, 1928.

C. H. JARRETT ADVERTISING AND LIKE DEVICE 2 MM m A S w z a $4 3 Filed Jan. 21. I926 Jan. 10, 1928.

a. H. MHWETT ADVERTISING AND LIKE DEVICE Filed Jan. 21. 1926 5 She'ets-Sheet Patented Jean. It 1928,

UNITED STATES CHAR-LES HENRY JARRETT, OF CROYDON, ENGLAND.

ADVER'LEISING AND LIKE DEVICE.

application filed January 21, 19%, Serial No.

This invention relates to improvements in advertising and like devices of the type in which a stencil havingthe advertising or like matter formed therein revolves around a source of illumination. The chief object of my invention is to obtain sharp definition of the advertising or like matter of the stencil. l urther objects 01'' my invention are to enable the stencils to be changed with rapidity and ease, and to provide a screen tor the reception of the advertising or like matter projected from the stencil, which gives the appearance of a constantly revolving sphere. By sharp definition I mean the absence of blurring of the projected matter, as seen by the normal eye.

According to this invention, the rays from the lamp or the like for projection or the advertising or like matter are 'locussed Within the stencil so as to produce sharp delinition. The focussing oi. the light is elilected preterably by means ol an aperture formed in a casing applied to or surrounding the lamp. It may, however, in some cases be obtained. by using a very small light source;

The stencil is constructed independently of its upper supporting portion so that it can be readily changed for a fresh stencil.

According to a further feature o'l this invention, the screen on to which the light from the said source of illun'iination is projected may be hemispherical, or substantially so, and translucent.

iliccordingr to a still further feature of this invention, the source of illun'iination may be so arranged that it illuminates the space behind the device as well as displaying the advertising matter.

Other advantages and novel features of this invention will be described hereinafter and claimed in the appended claims.

In the drawings, which illustrate the preferred Gl'l'lbOdll'flBlltS of this invention Figure l is an elevation of the complete apparatus. i

Figure 2 is a central vertical section of the same. i t i Figure 3 is a plan on an enlarged scale of the bearing for the stencil.

Figure 4 is a section of thesaid bearing attached to the stencil-support.

Figure 5 front elevation of a stencil.

Figure 6 is an elevation of the lamp holder in the open position.

l igure l is a central vertical section oil a further term ct this invention, and

82,77'7,and in Great Britain January 31, 1925.

Figure 8 is a front elevation of the lamp and screen therefor.

Referring to Figures 1 to 6 of the accomp inying drawings, the main parts of the device are fitted to an ornamental wooden frame or stand (6 which can be hung up on a slotted plate a or can be arranged tostand by means of two back stays a which are hinged to the back of the stand a. Feet a are preferably provided at the bottom of the frame a and are of such length that the front of the frame slopes backwardly, as shown in l igure S2.

The source of illumination and of theheat required to rotate or drive the stencil is an electric lamp Z) of the ordinary single filament strip or show-case type, or in other words a lamp which is of the long tubular type. t i

The lamp holder 6 is tubular in shape and made of tin or any other suitable material. The lower portion of the lamp holder is made in such a Way to serve as a reflector which is of such shape and so arranged as to reflect the light of the lower part of the lamp backwards into the shop Window or the like in which the device is placed, (see Figures 2 and 6).

At a suitable distance up the lamp holder is cut an aperture 6 preferably in the form of a horizontal slot, the said slot being so situated or arranged that the exposed portion of the lamp filament b is approximately at the centre of the hemisphere or other type of screen, 0, being used. The lamp holder theretore serves as amask between the source 01 llkflil? and the stencil. The inside of the upper part oi the lamp holder is blackened as at b to prevent reflection within the holder. The back 5 of the top half of the lamp holder 6 is hinged to al low for the strip lamp 7) to be easilytitted into and removed from the holder.

In some cases, the lamp holder 72 can be in skeleton :torm,only sullicient of it being retained to hold the lamp in position or the lamp maybe fixed by any other suitable method, in which case the lamp 7 itself would be screened, masked, blackened or otherwise suitably treated so as only to leave the desired small aperture, corresponding to the aperture and the lower rear portion of the lamp, clear.

The lamp 5 is preferably held in the holder bya spring 2') which is situated at the bottom (it the holder Z and which, by

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its pressure. presses the lamp b against the top end of the lamp holder 5 The said spring-o is preferably housed within a casing or sleeve Z). The-electric wires (Z are connected to small caps d which are made of teak-wood or other suitable non-conducting material. The said caps (Z are made to fit easily on each end of the lamp, and the wiresareconnected t the caps by small screws d3, the points ofthescrews being:

caused t0 make contact with the lamp 7) and thefscrews being let into the caps (Z in such a manner that; perfect insulation is s "cilred.

" Thepivot (see Figures 2 and 4:) consists ,"of aisteel or other point e, and is suitably supported at the top of the lamp holder or m ask 1)" between the latter and the screen 0. (lonveniently, the pivot point 615 carried by amenib er e slidable in. an eye or the like above mentioned can be fixed in any other so" The St ncil f' '(Figures' 2 and 5), which suitable manner.

maycomprise acylinder having spaces f cutout in any manner to represent letters,

ffigures words orany other designs, has at "its upper endan inwardly turned flange f which rests'on a' disc i provided with vanes 7 f"; on which the heated air impinges and I causes the stencil f to revolve. A central cup-shaped bearing is fixed in the centre of theflvanes f to receive the point of the preferably llOllOW' and made of glass al- "h though it may, if so desired. be made of ny'otlier suitable material. The said bearing is'isecured to the vanes by means of a collar f which takes over the uppertubular portion f" of the'said bearing and is pro I vid ed with radial lugs f ycon veniently three in number, which are bent over the outside of'the bearing, are passedthrough the disc i and are clinched over on the under side thereof. Byhaving the pivot point of steel andpivot cupbearing of glass, friction and wear aref 'lied'uced to a m nimuim The vaneslandrthe bearing constitutea s'inglev unit separate from the cylinder. Thiusyhy llftlligilliocylinder-Oil the disc 7 one cylinder can be changed for another in order'to change the wording etc., of the advertisem'ent', th'esame vanes and bearing "serving for all the cyllnders. In this way,

the advertisement can bechanged from time to time with the minimum of labourrenderi n'g; the advertisement always new-the only cost being that of the cylinders which is very small indeed.

nation or the interior oi the stencil from its upper to its lower edge so that a cylin diical stencil of a-imallcr diameter can be used than would be nu-cssar3 it the axis of rotation of said stencil. were concentric with the source of light. i

Instead of the advertising); matter being cut out of the stencil f, thestencil may it self be of transparent material and. may have the advertising matter painted on or otherwise applied thereto.

:The outer screen a is fixed or held by a ring 0 or other shaped carrier or frame which is of brass or other suitable material and is mounted in position on the stand a by a hinge 0 and by clipping under a screw head 0 or it may be mounted in any other suitable v: y so that it can be easily detached to allow of the screen being changed when necessary. An inner ring 0 is provided so that the glass or like screen 0 may be held firmly. I

The screen above mentioned may be made of celluloid, glass, paper or any other suitable translucent material, and the rim: or frame containing the screen may be fixed in any suitable manner on to the outer frame or stand or, in some cases, to a show-card.

A forwardly extending: hood (1 is pro- .vided. on the stand (in to prevent lie-ht |'a \'s .passing upwardly th ough (hc vanes on in the screen (i. pivot e The said cap-shaped bearmgftts lVhen the apparatus is assembled and is in operation, the only parts seen from the front are, as illustrated in Figure l. the screen 0 with the lettering or designs 0" appearing and disappearing thereon due to the rotation of the stencil.

A cover 5 of suitable design is rccnred tn the back of the stand a so as to hrotcct the working parts of the device.

Referring now to Figures T and S of the accompanying drawings. The device is of substantially the same construction comprising the framework a provided with a heavy counter-weight a which is secured to the framework (1 by means of rods, (1,, the counllll l in

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messes tion of the advertising matter may pass. The screen 7' carries the adjustable pivot pin as in the construction illustrated by Figures 1-6. Thestencil f is constructed separate from the vane disc 7 which are provided with a central agate or sapphire bearing f. The vanes 7'' may be surrounded by a small chimney 7" to increase the draught. Also a plate a? is provided to prevent the light rays passing downwardly on to the lowermost portion oi the screen 0.

In a device constructed in accordance with this invention, the beam of light passing through the said aperture produces, on the screen, a sharply defined and magnified projection of the letters 7', etc, in the sten oil or cylinder f, the size of the projected letters 0 being determined by the distance between the screen 0 and the stencil or cylinder 7. Due to the magnification a comparatively large number of words, sentences, or other advertising matter etc, can be cut in the stencil or cylinder and made to appear on the screen in such a size that it can be read with case at a distance.

. If desired, a flat or other shaped screen may be used instead of a hemispherical shaped screen c. When a flat screen is employed the letters, etc. will diminish in size from one end towards the middle of the screen and then increase in size as they travel to the other end of the screen.

Any other desired form of illumination and heat may be used, ifso desired, tor example, an oil or gas lamp may be employed. Also, more than one lamp maybe employed, if so desired.

The shapeo'l the lamp holder and lamp maybe varied, more particularly in large signs, or when the illumination from the lower hall: of the lamp is not required. In large signs it would be necessary to use a more powerful electric or other lamp, for example, a400 to 500 watt lamp.

Thus it will be obvious that the lamp holder canbe made in any way and to any design, providing only that the required aperture for the purpose of focussing; the light is obtained.

In order to vary the colours of the light projected on to the screen, means may be provided for enabling differently coloured pieces of glass 7: or the like to be interposed between the light-source 72, and the stencilled cylinder 7. Such means may comprise a grooved holder Z into which the dii'lerent glasses or the like can be placed. In order to produce a striped effect, I may use glass striped with different colours arranged vertically. Byturning this striped glass so that the stripes are horizontal the colouring remains stationary. Instead of employing coloured pieces of glass to vary the colour of the projected light, the revolving cylinder or stencil may be covered with coloured to aid the advertising matter, if so desired.

Large outdoor signs constructed in accordancewith this invention possessa great advantage over other signs which employ a large number of lamps in that a large illuminated advertisement can be obtained by the use of a very small light-source, whereby only a small consun'iption of current, or other medium from which the light is obtained is necessary. In the case more par ticularly ot large advertisements, the screen may be semi-cylindrical or cylindrical.

When the advertising device is placed in an exposed position or is liable to besubject ed to wind or other air currents, the stencil may be driven by a motor gearedto a toothed ring on the stencil or otherwise in operative connection with the stencil. In such a case, the hearing above described may be replaced by a ball, roller or other suitable bearing.

It will be appreciated that many types of lamps are suitable tor use in an advertising device according to this invention. The sharp definition which it is the chief object of this invention to obtain, may be secured by means of an automobile lamp whichmay he worked from accumulator or from A. C. mains by means of a transformer, or by means ot a standard projector type lamp with the IllZHIIBDtFQLlgQOD as described in connection with Figures 7- and 8. Further, it may itdesired be a Point-o-Light lamp or a tungsten arc lamp. In fact, any lamp which. will give the desired point of light or a perpendicular line of: light may be employed. I have :t'ound that it is desirable that such line oi light should not be more than 1/ inch long, and that it the lilan'ient oi the lampwhich it is desired to employ is of greater dimensions it should be suitably masked or screened for example as described with reference to Figure 1-6. Or the source of light within the stencilmay be tocussed to suitable dimensions by optical means, for exam iile, by means of a lens or lenses or by means of a concave mirror. I

The screen may, in some cases, be dis pensed with and the light rays after passing through the stencil may be arranged to impinge on the window of a shop or the like.

1. An advertising device comprising a lamp, a lamp holder in two parts hinged together, the one part being shorter than. and arranged to close upon, the upper portion of the other part, the longer part of the lamp holder having a horizontal slot, the inside portion of the shorter part and the upper portion of the inside of the longer part being blackened to prevent internal reflections and the lower portion of the longer part being'brighta-to reflect the light from said lower portion backwardly, a pivot point "carried. by the upper portion of the lamp holder, acylindrical stencil rotatably supported on said pivot point about the-lamp and a translucent screen for displaying the advertising matter on an enlarged scale.

2. An advertising device comprising a lamp, a lamp holder in two parts hinged together, the one part being shorter, than, and

' arranged to close upon the upperportion oi:

larg the-fother part, thelonger part of the lamp j holder having a horizontal slot, the inside portlon ot the shorter part and the upper 15' *anda hemi-spherical translucent screen for di-spleyingthe advertising matter on an enscale. v -3. An advertising device comprising a lamp,a lamp holder in two parts hinged togetherfth'e one part being shorter than and arranged to close upon the upper portion of the other part, the longer part of the lamp "holder having ahorizontal slot, the inside 7 portion of the shorter part and the upper .portion of the'in'side of the longer part being blackened to revent internal reflections and 1 the 'loWer portion of the longer part being bright to reflect the light from the lower portion of the'filament of the lamp back- Wardly, a pivot fpoi-nt-adjustably carried by the upper portion of thelamp holder, a cylindrical stencil rotatably supported on said pivot point about the lamp, a coloured glass {interposed between the lamp holder and said sten'cilto colour the projected light and a hemispherical translucent screen for displaying the advertising matter on an en- 'Tlarged' scale. 7

' f 4; A device of the class described, comprising'a translucent substantially hemispherical screcn,'a source of light and a mask for said source of light behind saidsereen, said mask having an aperturejfor the passage of rays of light f om said source of light against screen, a, pivot supported by said mask between said mask and screen, and a cylindrical stencil supported by said pivot for rotation on its longitudinal axis around said source of light and mask.

5. A device of the class described, comprising a translucent screen, a source of light behind said screen, a mask between said source of light and said screen and ha vmg an ported by said spindle tor rotation on its longitudinal axis.

- GJA device of the class described, comprising a translucent screen, a source of light beh'nd said screen, a mask between said source of light and said screen and having an aperture for the passage oi rays of light from said source of light against said screen, a bracket.projecting trom said mask above said aperture toward said screen, a vertical spindle carried by said bracket, and a cylindrical stencil surrounding said source of light and said mask and supported by said spindle for rotation on its longitudinal axis.

7 A device according to claim 6 wherein the spindle-supporting bracket is horizontally adjustable.

8. A device of the class described, comprising a translucent screen, a source of light behind said screen, a mask between said source of light and said screen and having an aperture for the passage of light rays from said source of light against said screen, a bracket mounted'on said screen above said. aperture and extending toward said screen. a rotatable bearing element supported by said bracket above said mask, and a cylindrical stencil surrounding said source of light and said mask and detachably supported by said bearing element.

9. A device according to claim 8 wherein the bearing element carries a disc and the cylindrical stencil has means projecting from its internal periphery and resting upon said disc.

In testimony whereof I have signed my name to this specification.

CHARLES HENRY JAIIRE' ."l. 

